iphone - 如何使用全局/静态变量 OBJ-C

Question

我希望保存用于一种方法的变量，然后在应用程序的另一种方法中调用它。这与全局/外部/静态变量有关吗？如果是这样，我想知道它将如何设置。我尝试使用全局和静态但没有成功。

我正在尝试保存 newX 和 newY 的信息

-(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
...
    int newX = (int)(Button.center.x + valueX);
    int newY = (int)(Button.center.y + valueY);
...
}

然后调用它

-(IBAction)clicked:(id)sender

{
    randX = arc4random() % 320;
    randY = arc4random() % 548;

    CGPoint randNewPlace = CGPointMake(randX, randY);
    Rand.center = randNewPlace;



    if (newX == randX || newY  == randY)
    {
        [Rand sendActionsForControlEvents:UIControlEventTouchUpInside];
    }
}

谢谢。

Answer 1

按照下面的操作

声明属性

@property(nonatomic,weak) int newX;
@property(nonatomic,weak) int newY;

-(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
...
    self.newX = (int)(Button.center.x + valueX);
    self.newY = (int)(Button.center.y + valueY);
...

}

-(IBAction)clicked:(id)sender

{
   randX = arc4random() % 320;
   randY = arc4random() % 548;

   CGPoint randNewPlace = CGPointMake(randX, randY);
   Rand.center = randNewPlace;

   if (self.newX == randX || self.newY  == randY)
   {
      [Rand sendActionsForControlEvents:UIControlEventTouchUpInside];
   }
}